Have you thought about some sort of gutter cover to avoid having to clean your gutters every year? This summer I put in a product called "gutter brush" which indeed looks like a 5" diameter bottle brush. It fills up the gutter space and prevents leaves from getting in.
Thought about those plastic covers but sounds like they get clogged up pretty easily. Also thought about those metal "helmet" gutter covers but heard some negative things about them, too, before deciding to go with the brushes.